Paul Behrens is a British author and academic in environmental change at Leiden University. His popular science book, The Best of Times, The Worst of Times: Futures from the Frontiers of Climate Science (Indigo Press 2021) describes humanity’s current trajectory and possible futures in paired chapters of pessimism and hope, on topics including the economy, energy, land and population. He is editor and author of Food and Sustainability (Oxford University Press, 2019). His research on food and energy systems, land use and climate change has appeared in scientific journals and media outlets such as The New York Times, Scientific American, Nature Sustainability, Nature Energy, Nature Food, PNAS and the BBC.

Paul is a physicist by training, and has worked in industry NGOs, and academia.